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Proceedings Paper

High-peak-power (>1.2 MW) pulsed fiber amplifier
Author(s): Roger L. Farrow; Dahv A. V. Kliner; Paul E. Schrader; Alexandra A. Hoops; Sean W. Moore; G. Ronald Hadley; Randal L. Schmitt
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Paper Abstract

We report results from Yb-doped fiber amplifiers seeded with two microchip lasers having 0.38-ns and 2.3-ns pulse durations. The shorter duration seed resulted in output pulses with a peak power of >1.2 MW and pulse energy of 0.67 mJ. Peak power was limited by nonlinear processes that caused breakup and broadening of the pulse envelope as the pump power increased. The 2.3-ns duration seed laser resulted in output pulses with a peak power of >300 kW and pulse energy of >1.1 mJ. Pulse energies were limited by the onset of stimulated Brillouin scattering and ultimately by internal optical damage (fluences in excess of 400 J/cm2 were generated). In both experiments, nearly diffraction-limited beam profiles were obtained, with M2 values of <1.2. Preliminary results of a pulse-amplification model are in excellent agreement with the experimental results of the amplifiers operating in the low-to-moderate gain-depletion regime.

Paper Details

Date Published: 23 February 2006
PDF: 11 pages
Proc. SPIE 6102, Fiber Lasers III: Technology, Systems, and Applications, 61020L (23 February 2006); doi: 10.1117/12.646815
Show Author Affiliations
Roger L. Farrow, Sandia National Labs. (United States)
Dahv A. V. Kliner, Sandia National Labs. (United States)
Paul E. Schrader, Sandia National Labs. (United States)
Alexandra A. Hoops, Sandia National Labs. (United States)
Sean W. Moore, Sandia National Labs. (United States)
G. Ronald Hadley, Sandia National Labs. (United States)
Randal L. Schmitt, Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 6102:
Fiber Lasers III: Technology, Systems, and Applications
Andrew J. W. Brown; Johan Nilsson; Donald J. Harter; Andreas Tünnermann, Editor(s)

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